RINNAI - ‘E’ BEFORE ‘I’
OR VICE VERSA?
Rinnai offers big performance, heavy duty, diminutive appliances
that offer virtually limitless volumes of hot water at useable
temperatures – all through engineering design and excellence. And
both ‘E’ (external) - and ‘I’ (internal) versions are offered. Here Chris
Goggin, Rinnai Operations Director, explains the why and the where
of using either model to suit the application.
Gas fired appliances such as hot water heating units or domestic or
light commercial boilers tend to be wall hung on the interior of a
site. Having a unit sited internally on a kitchen wall or a plant room
makes for convenience for the end-user and for the installer or
contractor in terms of installation, maintenance or servicing.
that it is a gas fired appliance and it is outside habitable space; and
with no need for a flue there’s greater flexibility on exactly where
you place the unit; it is easier to service and maintain; all units have
robust casings and comprehensive weather controls, for example a
Rinnai external appliance is frost protected down to minus 25ºC.
All these factors add up to possible economies for the end user and
ease of installation for the installer.
Rinnai offer several units in both external – ‘E’ - and internal – ‘I’ -
models. They are in the more heavy-duty part of our product range
– 1600, 1500, 55 but also at the smaller end - the 17e.
However, external models of hot water heating units have become
increasingly popular. We are seeing more and more units sold
as installers seem to be favouring external siting for a variety of
reasons. Rinnai’s HDC1600i/e low NOx, gas-fired continuous flow water
heater, delivers commercial qualities of hot water, up to 37 litres per
minute on demand - to any site and application. And they are ErP ‘A’
rated.
Firstly, having a gas fired unit internally has its own restrictions –
lack of internal space, flueing restrictions and impediments, exact
siting for installer convenience, inspections etc. On external units
a whole stack of advantages come into play - starting with the fact The Rinnai external version HDC1200e gives end users 105.5% net
efficiency* because the condensing process delivers up to 95%
thermal efficiency, translating to significant energy savings when
compared to standard tankless water heaters.